// Copyright (C) 2012 Yury Bychenkov (http://bychenkov.com).
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
//  - Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//  - Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
//  - Neither the name of Yury Bychenkov nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

#ifndef database_h
#define database_h

#include "common.h"
#include "schema.h"
#include "logchunk.h"
#include "nunchunk.h"
#include "resourcebundle.h"
#include "query.h"
#include "traits.h"
#include "queryexecutor.h"
#include "databasemanager.h"

class RecordBuilder {
public:
	RecordBuilder(const RecordBuilder& that);

	RecordBuilder& add(const char* value);

	RecordBuilder& addNull();
	RecordBuilder& addString(const void* value, uint size);
	RecordBuilder& addDecimal(const void* value, uint size);
	RecordBuilder& addInteger(int64 value);

	void reset();
	bool isBad() const;
	bool isComplete() const;

private:
	void operator=(const RecordBuilder& that) {}
	RecordBuilder(const Schema& schema);

	friend class Database;

private:

	const Schema& schema;
	ResourceBundle bundle;
	uint currentColumnIndex;
	bool bad;		
};

class Database {
public:
	const Schema& getSchema() const;

	RecordBuilder newRecordBuilder();

	bool add(const RecordBuilder& recordBuilder);

	template <typename Consumer> bool search(const char* query, Consumer& consumer, uint& count);

	~Database();

private:
	static Database* open(const DatabaseManager& dbManager, const char* path);
	void manage();

private:
	template <typename Consumer>
	struct ProxyConsumer {
		ProxyConsumer(Consumer& consumer, uint topCount);
		bool isDone() const;
		bool put(const uint8* tupleData);		

		Consumer& consumer;
		uint topCount;
	};

	struct OrderingConsumer {
		OrderingConsumer(uint8* memory, uint memorySize, uint topCount);
		bool put(const uint8* tupleData);

		Heap<TupleTraits> tupleHeap;
	};


	struct Chunk {
		LogChunk* logChunk;
		NunChunk* nunChunk;
		uint index;
	};

	Database(const DatabaseManager& dbManager, const string& path, const Schema& schema, const vector<Chunk>& chunks);

	bool addChunk();
	
	static string getNunFileName(uint index);
	static string getLogFileName(uint index);

private:
	const DatabaseManager& dbManager;
	const string path;
	const Schema schema;

	SafeArray<Chunk> chunks;

	static Logger logger;

	friend class DatabaseManager;
};

#include "database.hpp"

#endif // database_h
